YouTube Shorts ad specs and safe zone
Updated 2026-08-15 · Risk-term list version 2026-08-15c
YouTube Shorts ad specs, in one line: 9:16 vertical, hosted as a YouTube video rather than an uploaded file. An ad may run up to 3 minutes, but the Shorts feed plays only the first 60 seconds. Safe zone — Keep the bottom 15% clear of the title bar.
5 of the 6 fields below come from the official page (opened and linked on 2026-08-15); the rest are marked 🟡 experience-based. We do not invent citations.
Specs are only the entry ticket. What gets an asset rejected is the claims, and each platform words those rules differently — the last section covers this one.
YouTube Shorts ad specs, field by field — and where each number came from
The third column is the provenance of that row. “From official page” means the number is copied from one of the pages under Sources; “🟡 experience-based” means the official page does not state it and this comes from campaign experience — do not cite it as platform policy. Checked 2026-08-15.
| Field | Value | Provenance |
|---|---|---|
| Aspect ratio | 9:16 vertical fits best; horizontal footage gets blurred bars top and bottom inside Shorts | from official page |
| Length | A video can run up to 3 minutes, but the Shorts feed only plays the first 60 seconds, so keep it under 60; 10–30 seconds for action-driving cuts | from official page |
| Where the video has to live | The video has to be uploaded to YouTube first; you can set it to public or unlisted | from official page |
| How the Shorts feed plays it | The feed plays only the first 60 seconds; an overlay appears at 50 seconds letting the viewer watch the rest on the YouTube watch page | from official page |
| CTA overlay copy length | Shorts ads on mobile carry a call-to-action overlay card; the page recommends supplying both a 40-character headline and a 90-character description | from official page |
| Safe area (safe zone) | Keep roughly the bottom 15% clear of the title bar — estimated from practice; the official page publishes no percentage | 🟡 experience-based |
1 field here has no official source (Safe area (safe zone)). We did not invent a citation and we did not hide it — go by the platform’s current rules and the upload hints in your own back office.
What this means in practice on YouTube Shorts: Watch-through carries most of the weight; hold a still final frame for about a second so the loop feels intentional
How this platform reads claims
Shorts has the loosest technical constraints; the real constraint is watch-through. For shapewear that means this page is mostly permission to reuse the 9:16 TikTok cut rather than shoot again. One difference is worth keeping separate: the creative for a Shorts ad is a YouTube video, not a file you upload into an ad account. It lands on your channel first (public or unlisted) and the campaign then points at it, so it sits under the channel-side community guidelines and the ad policy at the same time, not under ad review alone. The practical consequence: a shapewear script that TikTok rejects can fail here at the upload step rather than at the ad-building step. The other one: the official page publishes the container rules — where the video lives, how long the feed plays it, how long the CTA copy may be — and no composition safe-zone percentage at all. That is why the safe-area row here is marked experience-based: the bottom 15% is what the title bar and the CTA overlay card occupy, and you compose around that rather than around an official figure.
For the actual phrasings — which ones are high risk in this category and what to say instead — see the flagged-term list, or paste your copy into the free checker.
One shoot, two aspect ratios
Cross-platform is the structural difference from the platforms’ own tools: TikTok’s does not leave TikTok, Meta’s does not leave Meta. But the same SKU goes to TikTok Shop, Meta, Shorts, Temu and Amazon. Four of those take 9:16; Amazon Sponsored Brands video is documented as "16:9 only" with no vertical option — so it is one shoot and two aspect ratios, not one cut everywhere.
| Platform | Aspect | Max length | Safe area | Notes |
|---|---|---|---|---|
| TikTok / TikTok Shop | 9:16 | 60s | Leave roughly 130px clear at the top and 480px at the bottom; the interaction rail on the right takes about 140px | Land the core message in the first 3 seconds; captions are on by default; AI-generated content must be disclosed by you, and the platform also labels it automatically |
| Meta (Reels and Feed) | 9:16 as the main cut, with a 1:1 delivered as backup | 30s | Keep text, logo and key elements out of roughly the top 14%, the bottom 35% and 6% on each side | Advantage+ crops automatically, so keep key elements centred; also deliver a version that reads with the sound off |
| Temu on-platform | 1:1 and 3:4 | 30s | About 8% margin on all four sides | The product must appear within the first 2 seconds and fill at least 40% of the frame; do not burn price tags into the footage, so the cut survives a price change |
| Amazon Sponsored Brands | 16:9 — the spec page says "only"; there is no vertical option | 45s | Keep text and key elements out of the bottom-right corner; no black, colour or blurred bars | 6–45 seconds, and the spec page strongly recommends 20 or under; the video language must match the marketplace (an English marketplace needs English captions or an English voiceover) |
| YouTube Shorts | 9:16 | 60s | Keep the bottom 15% clear of the title bar | Watch-through carries most of the weight; hold a still final frame for about a second so the loop feels intentional |
The practical version: frame with horizontal headroom, then export two — a 9:16 master (key elements inside the middle 50% of the height, plus a 1:1) and a 16:9 for Amazon. Do not fake the 16:9 with bars: Amazon’s spec page explicitly says to avoid black, colour or blurred bars.
Other platforms
FAQ
When do the YouTube Shorts numbers go stale?
The platforms’ own pages change. This one stamps the date we opened them (2026-08-15), and lists 1 linked source below — the ones that self-date their “last updated” let you check the drift yourself. Go by the platform’s current rules before you spend, especially for safe areas, which move with UI redesigns.
Which YouTube Shorts fields are not officially sourced?
1 of them: Safe area (safe zone). The official page genuinely does not state these, so they carry the 🟡 mark. Rather than invent a citation, we mark the rows that carry less weight.
Does composing to the YouTube Shorts safe area waste frame?
On this placement the safe area is: Keep the bottom 15% clear of the title bar. It costs you some edge and buys one cut that covers most of the five placements. For a seller with many SKUs and a weekly creative refresh, reshooting costs far more than the edge.
Anything else to know before running on YouTube Shorts?
Watch-through carries most of the weight; hold a still final frame for about a second so the loop feels intentional. That is not a spec — it is the part a platform will not block at upload. A wrong spec costs you time; this kind of mistake costs you the flight.
Do AI-generated assets need a label?
On TikTok, yes — tick the disclosure in Ads Manager or add a clear disclaimer, caption or watermark yourself; undisclosed AI content that is detected gets rejected or restricted. For other placements, go by their current rules; we do not rule on their behalf. Worth saying: we do not make videos. This note is for when you use someone else’s generator.
Sources
- Google Ads Help · YouTube Shorts ad creative specs and best practice （checked 2026-08-15）